Feature: The tip is specially designed to remove debris with ease. It is effective for various wood, plywood, veneer work, ideal for drilling hidden hinges and door locks. Depth Stop Design: A depth stop can be attached to the shank, which prevents you from drilling too deep. Then you can control the hole depth from 15mm to 35mm. You can also remove the stop for unlimited depth. Guided by the circular rim, drills the entire arc of a circle in any direction. By designing with a curve, the head helps clear debris and work efficiently. The center spur on each drill bit ensures accurate drilling and prevents walking and wobbling during operation, creates perfectly round and accurate holes thanks to the center spur design. Carbide: Constructed with titanium steel alloy for long-lasting durability. High speed steel Forstner bit can drill overlapped, angled and pocket holes in all kinds of wood, easily drill hinge hole, cylinder hole, computer desk thread hole, home cabinet fixing. Widely Used: Suitable for drill presses, pistol drills, bench drills, vertical drills, hand-held electric drills, stand motor drills and mobile magnetic band drills, etc.